--- On Sat, 10/10/09, Tom Fine <[log in to unmask]> wrote:
> I'm way out on thin ice with this so some of the Edison
> experts on this list might shoot this theory down!
That's a picture of a Bell/Tainter Graphophone, but as
for concept, yes, you're right. The "hearing tubes" were
constructed in several styles, but they basically
resembled a doctor's stethoscope.